How to attach an email to an Apple calendar appointment?

I've never known this functionality to exist in macOS, but I've only been using it for about eight years. Apple was the first widespread OS to do drag-and-drop -- it's so weird they didn't incorporate it here.

If this easy, intuitive, drag-and-drop functionality DID exist, I think more mac users would use it. If you've got a busy schedule and live by your calendar, having important documents -- including emails -- attached to the calendar appointment can really simplify your life. Even more so if you have an administrative assistant help manage your calendar.

Thanks for asking. I want to actually attach the .eml file -- like you can attach a .zip or .pdf or .jpg to a calendar appt. I don't want macOS to "translate" the dates in the email into a calendar entry, I want to attach the actual file so I can open it later and get all the original information that's in that email -- text, links, graphics, etc.

Basically, by attaching the email to the calendar appointment, I don't have to go looking for that email in my email folder system.

Workarounds: I can "forward as attachment" the email, which pops up a new email message with the .eml attached, THEN save the .eml to a folder, THEN attach the .eml to a calendar appointment. But those are two extra steps and that's simply ridiculous.

I can also print the email to pdf, THEN save the pdf, THEN attach the pdf to the calendar appointment. Also ridiculous.

Microsoft Outlook makes this incredibly easy -- just drag the email into the calendar appointment. DRAG-and-DROP.

I know we're talking Honeycrisp apples and Granny Smith apples, but they're both apples and this is basic functionality.

I'm not the brightest bulb on the porch, so I'm completely open to being blind to obvious solutions.

Thanks. I'm looking to smoothly and quickly attach the actual email -- the .eml file -- not translate bits of the email into a calendar entry. I'd like to just drag the email (.eml) onto the calendar appointment details.

Based on Outlook and other email programs' functionality, this should be super-simple. But maybe there's a way I'm completely missing -- so maybe *I'M* super-simple.

Yeah, I acknowledged that I can attach a .eml with additional steps. If macOS can translate the email data into a .eml when attaching it, it certainly could do the same thing when dragging it into a calendar appointment.

It's just frustrating that Apple doesn't see the value in extending it's intuitive, drag-and-drop functionality into other apps. I thought having apps work together seamlessly is what macOS is supposed to be about.

Wow. Thanks.

I'm embarrassed to say I never tried dragging the email onto the calendar tableau itself. I've tried dragging it into the calendar DETAILS (which isn't a real window) and that didn't work.

I tried ATTACHING an email from the calendar details, which only allows attachment of files (which I could do with a .pdf of the email or a .eml, both of which required way too many steps).

So I'm happy to know this technique and I agree it's elegant -- but it's only an 80% solution. I can't easily add an email an attachment to an EXISTING appointment. If I have a calendar appointment that already has attachments, I can't drag an email onto that appointment. Instead, I have to go through one of the other labyrinthine processes to create a file.

Unless, of course, I'm missing SOMETHING ELSE, which I've already shown I'm capable of. Perhaps I have to be happy with 80%. But again, this is basic functionality for other calendar apps and I really, really hate workarounds.

Thanks again!